HI(g)has a ΔG_f° that is small and positive,so HI should dissociate to some extent but its activation energy is high.HI(g)is stable at room temperature.Chemists would describe the reason for the very slow dissociation reaction as:

Question

Quizplus · Accepted Answer

The high activation energy indicates that the reaction is kinetically controlled, meaning that the reaction rate is determined by the speed of the chemical process rather than the thermodynamics of the reaction. While the small and positive ΔG_f° suggests that HI should dissociate to some extent, the high activation energy slows down the reaction, making HI relatively stable at room temperature. Thus, choice D is the best answer.

HI(g)has a ΔGf° That Is Small and Positive,so HI Should

HI(g)has a ΔG_f° That Is Small and Positive,so HI Should